usb host读写U盘！

x5045,在P89V51RD2中用的，有EEROM，还有看门狗功能等！如果要详细的可以联系我，550291932-x5045, in P89V51RD2 used, and has EEROM, there are watchdog function! If you want details you can contact me 550291932

使用键盘上的上、下、左、右四个按键，可以分别控制led1,2,3,4, 每个LED 对应的Port 请参考“实验平台介绍”说明文档。要求按下 上面提到的四个按键中间的一个按键后，该按键对应的led 被点亮，持续1 秒钟以后led 熄 灭。-Use the keyboard on the upper and lower, left, and right buttons, can control led1, 2,3,4, each LED corresponding to the Port, please refer to " experiment on" documentation. Requirements of the four above-mentioned press the middle button of a button, the button that corresponds to being light led, continuous 1 second later led out.

一款应用在客运系统的LED导向屏程序，采用汇编语言编写，欢迎相关人员参考-Used in a passenger transport system LED screen-oriented procedures, the use of compiled languages are welcome to the relevant reference

Ti 公司低功耗RF芯片选型资料.其中有13.56-27MHz,300-1000MHz ,2.4GHz等等芯片选型参考-Ti low-power RF chip companies Selection information. Among them, 13.56-27MHz ,300-1000MHz, 2.4GHz chip, etc. Selection of reference

主要功能：利用AT89C/S51作为控制器，JM12864M型号的lcd作为人机界面，18B20温度传感器和DS12887时钟芯片为辅助IC的可调万年历系统。此万年历可以形象的表现出系统当前的状况，并能随意设置闹铃和时间，具有保存和不保存的当前设置的功能。-Main functions: the use of AT89C/S51 as a controller, JM12864M models of lcd as a man-machine interface, 18B20 temperature sensors and DS12887 Clock IC chip for auxiliary adjustable calendar system. This calendar can show the image of the system

44b0x的U盘源代码，用PCB上的Flash作为存储价质1M-44b0x U disk source code, the use of PCB Flash memory prices as a quality 1M

PIC单片机从SPI，接收其他主SPI的数据-PIC Singlechip from the SPI, main SPI receive data from other

通过小磁片对霍尔传感器所产生的电平变化进行记数的C程序~-Hall sensors through the small disk on the level generated by changes in procedures for counting of C ~

周立功公司推广的一个小型实时嵌入式操作系统，适合在51或AVR等单片机上使用。压缩包里包括系统源代码和一个在51下移植的例子。在KEILC51下开发-weeks meritorious promotion company of a small real-time embedded operating system, for the other 51 or AVR microcontroller use. Compression bundle including system source code and the next one in 51 transplant examples. Under development in KEILC51

《单片机语言C51程序设计》的部分配套源代码，适合于刚开始接触单片机编程的程序员- Single-chip C51 programming language part of supporting source code, suitable for beginning programmers contacts Microcontroller Programmer